Z84C2008PEG Zilog, Z84C2008PEG Datasheet - Page 268

• Manufacturer Part Number: Z84C2008PEG
• Description: IC 8MHZ Z80 CMOS PIO 40-DIP
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z84C2008PEG

• Processor Type: Z80
• Features: Low Power CMOS
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Cpu Speed: 8MHz
• Digital Ic Case Style: DIP
• No. Of Pins: 40
• Supply Voltage Range: 5V
• Operating Temperature Range: -40°C To +100°C
• Svhc: No SVHC (18-Jun-2010)
• Rohs Compliant: Yes
• Processor Series: Z84C2xx
• Core: Z80
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Operating Supply Voltage: 0 V to 5 V
• Maximum Operating Temperature: + 100 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Base Number: 84
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

248
Operation:
Op Code:
Operands:
Description: This instruction provides for conditional branching to other segments of a
Condition Bits Affected: None
Example:
UM008005-0205
Z80 CPU
User’s Manual
If Z = 1, continue
If Z = 0, PC ← pc + e
JR
NZ, e
program depending on the results of a test on the Zero Flag. If the flag is
equal to a 0, the value of the displacement e is added to the Program
Counter (PC) and the next instruction is fetched from the location
designated by the new contents of the PC. The jump is measured from the
address of the instruction Op Code and has a range of -126 to +129 bytes.
The assembler automatically adjusts for the twice incremented PC.
If the Zero Flag is equal to a 1, the next instruction executed is taken from
the location following this instruction.
If the condition is met:
If the condition is not met:
The Zero Flag is reset and it is required to jump back four locations from
480. The assembly language statement is
The resulting object code and final PC value is:
0
0
M Cycles
M Cycles
1
3
2
e-2
0
0
JR NZ, e
0
12 (4, 3, 5)
T States
T States
7 (4, 3)
0
0
20
JR NZ
4 MHz E.T.
4 MHz E.T.
,
$ - 4
3.00
1.75
Z80 Instruction Set